Sure, you know what the famous “OK” scuba hand signal means, but what about other diving signs used by scuba divers? If you’re ready to increase your ability to communicate underwater, then you’re going to love using our directory of scuba hand signals. Either browse at random, or pick a category to see specific scuba diving hand signals including problem solving dive signals, wreck and technical diving signals, and special scuba signals for any other situation you can imagine. You’ll find photos of scuba hand signals here, along with detailed descriptions you can use to perfect your own underwater dive signs.